Want to excuse me, in front of the book says MDR and MAR is located in the storage, behind, when we talk about CPU and MAR and MDR in CPU, so I want to ask about where it is located in?

CodePudding user response:

Main memory works carried out in accordance with the storage unit address access, this access mode called according to address access mode (associative memory is according to the content access),
Storage to store binary information, MAR deposit to fetch address, find the selected storage unit after address decoding, MDR for staging to read or write from memory of information, sequential control logic is used to produce the memory required for the operation of all kinds of timing signals,

although note MAR and MDR is part of the memory, but in the modern CPU is present in the CPU; Cache Cache also exists in the CPU,